Add Pica Texture Encoding Decoding

Supported Formats: A4, A8, L4, L8, RGB565, RGB888 RGBA8888 (for now) Add a .clang-format Move ctrff into a subdirectory Replace the BCLIM creation part with Pica encoder Fix non const RGB565ToRGBA issue
2026-01-06 21:51:51 +01:00
parent e4fa2202d2
commit 022d69dc8e
13 changed files with 626 additions and 66 deletions
--- a/.clang-format
+++ b/.clang-format
@@ -0,0 +1,321 @@
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--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,18 +29,13 @@ add_library(ctrff STATIC
    source/binutil.cpp
    source/helper.cpp
    source/lz11.cpp
+    source/pica.cpp
    source/smdh.cpp
 )
 target_include_directories(ctrff PUBLIC include)

 if(${CTRFF_DESKTOP})
-    add_subdirectory(vendor/palladium)
-    add_executable(ctrff-cli tool/main.cpp)
-    target_include_directories(ctrff-cli PUBLIC include vendor/stb vendor/cli-fancy/include)
-    target_link_libraries(ctrff-cli PUBLIC ctrff palladium)
-    add_executable(test tool/test.cpp)
-    target_include_directories(test PUBLIC include vendor/stb vendor/cli-fancy/include)
-    target_link_libraries(test PUBLIC ctrff)
+    add_subdirectory(tools)
 endif()

 install(TARGETS ctrff)
--- a/include/ctrff.hpp
+++ b/include/ctrff.hpp
@@ -6,4 +6,5 @@
 #include <ctrff/bcwav.hpp>
 #include <ctrff/binutil.hpp>
 #include <ctrff/lz11.hpp>
+#include <ctrff/pica.hpp>
 #include <ctrff/smdh.hpp>
--- a/include/ctrff/bclim.hpp
+++ b/include/ctrff/bclim.hpp
@@ -9,24 +9,24 @@
 namespace ctrff {
 class CTRFF_API BCLIM : public BinFile {
 public:
-  BCLIM() {}
+  BCLIM() : pCurrent(Header::Default()), pImag(ImagHeader::Default()) {}
  ~BCLIM() {}

  enum Format : u32 {
-    L8,
+    L8,  // tested
    A8,  // tested
    LA4,
    LA8,
    HILO8,
    RGB565,  // tested
-    RGB888,
+    RGB888,  // tested
    RGBA5551,
    RGBA4444,
    RGBA8888,  // tested
    ETC1,
    ETC1A4,
-    L4,
-    A4,
+    L4,  // tested
+    A4,  // tested
  };

  struct Header {
--- a/include/ctrff/helper.hpp
+++ b/include/ctrff/helper.hpp
@@ -5,7 +5,7 @@
 namespace ctrff {
 CTRFF_API void String2U16(ctrff::u16 *res, const std::string &src, size_t max);
 CTRFF_API std::string U16toU8(ctrff::u16 *in, size_t max);
-CTRFF_API void RGB565toRGBA(std::vector<ctrff::u8> &img, ctrff::u16 *icon,
+CTRFF_API void RGB565toRGBA(std::vector<ctrff::u8> &img, const ctrff::u16 *icon,
                            const int &w, const int &h);
 // Image can only be rgba8888
 CTRFF_API void RGBA2RGB565(ctrff::u16 *out, const std::vector<ctrff::u8> &img,
--- a/include/ctrff/pica.hpp
+++ b/include/ctrff/pica.hpp
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <ctrff/types.hpp>
+
+/**
+ * 3ds GPU Stuff
+ */
+
+namespace ctrff {
+namespace Pica {
+enum Color : u32 {
+  L8,  // tested
+  A8,  // tested
+  LA4,
+  LA8,
+  HILO8,
+  RGB565,  // tested
+  RGB888,  // tested
+  RGBA5551,
+  RGBA4444,
+  RGBA8888,  // tested
+  ETC1,
+  ETC1A4,
+  L4,  // tested
+  A4,  // tested
+};
+CTRFF_API void EncodeImage(std::vector<ctrff::u8>& ret,
+                           std::vector<ctrff::u8> rgba, int w, int h,
+                           Color dst);
+CTRFF_API void DecodeImage(std::vector<ctrff::u8>& ret,
+                           std::vector<ctrff::u8> pixels, int w, int h,
+                           Color src);
+}  // namespace Pica
+}  // namespace ctrff
--- a/source/helper.cpp
+++ b/source/helper.cpp
@@ -28,7 +28,7 @@ CTRFF_API ctrff::u32 ctrff::TileIndex(const int &x, const int &y,

 // TODO: Fix colors
 CTRFF_API void ctrff::RGB565toRGBA(std::vector<ctrff::u8> &img,
-                                   ctrff::u16 *icon, const int &w,
+                                   const ctrff::u16 *icon, const int &w,
                                   const int &h) {
  if (img.size() != (w * h * 4)) {
    img.clear();
--- a/source/pica.cpp
+++ b/source/pica.cpp
@@ -0,0 +1,197 @@
+#include <ctrff/helper.hpp>
+#include <ctrff/pica.hpp>
+
+namespace ctrff {
+namespace Pica {
+CTRFF_API void EncodeImage(std::vector<ctrff::u8>& ret,
+                           std::vector<ctrff::u8> rgba, int w, int h,
+                           Color dst_color) {
+  // Only used in rgb/rgba
+  int bpp = dst_color == RGBA8888 ? 4 : 3;
+  switch (dst_color) {
+    case RGB565:
+      ret.resize(w * h * 2);
+      ctrff::RGBA2RGB565(reinterpret_cast<ctrff::u16*>(ret.data()), rgba, w, h);
+      break;
+    case RGB888:
+    case RGBA8888:
+      ret.resize(w * h * bpp);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = (y * w + x) * 4;  // basic rgba indexing btw
+          int dst = ctrff::TileIndex(x, y, w) * bpp;
+          for (int i = 0; i < bpp; i++) {
+            ret[dst + bpp - 1 - i] = rgba[src + i];
+          }
+        }
+      }
+      break;
+    case A8:
+      ret.resize(w * h);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = (y * w + x) * 4;  // basic rgba indexing btw
+          int dst = ctrff::TileIndex(x, y, w);
+          ret[dst] = rgba[src + 3];  // extract alpha only
+        }
+      }
+      break;
+    case A4:
+      ret.resize((w * h) >> 1);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = (y * w + x) * 4;  // basic rgba indexing btw
+          int dst = ctrff::TileIndex(x, y, w);
+          ctrff::u8 tmp = rgba[src + 3] >> 4;
+          int a4pos = dst >> 1;
+          if ((dst & 1) == 0) {
+            ret[a4pos] = (tmp << 4) | (ret[a4pos] & 0x0f);
+          } else {
+            ret[a4pos] = (ret[a4pos] & 0xf0) | tmp;
+          }
+        }
+      }
+      break;
+    case L8:
+      ret.resize(w * h);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = (y * w + x) * 4;  // basic rgba indexing btw
+          int dst = ctrff::TileIndex(x, y, w);
+          // Basic luminance calculation (already used in renderd7)
+          ret[dst] =
+              (rgba[src + 0] * 77 + rgba[src + 1] * 150 + rgba[src + 2] * 29) >>
+              8;
+        }
+      }
+      break;
+    case L4:
+      ret.resize((w * h) >> 1);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = (y * w + x) * 4;  // basic rgba indexing btw
+          int dst = ctrff::TileIndex(x, y, w);
+          // Basically same as a4 just with the luminance calculation func
+          ctrff::u8 tmp = ((rgba[src + 0] * 77 + rgba[src + 1] * 150 +
+                            rgba[src + 2] * 29) >>
+                           8) >>
+                          4;
+          int a4pos = dst >> 1;
+          if ((dst & 1) == 0) {
+            ret[a4pos] = (tmp << 4) | (ret[a4pos] & 0x0f);
+          } else {
+            ret[a4pos] = (ret[a4pos] & 0xf0) | tmp;
+          }
+        }
+      }
+      break;
+
+    default:
+      throw std::runtime_error("[ctrff] Pica: Unsupported Color format: " +
+                               std::to_string((int)dst_color));
+      break;
+  }
+}
+
+CTRFF_API void DecodeImage(std::vector<ctrff::u8>& ret,
+                           std::vector<ctrff::u8> pixels, int w, int h,
+                           Color src_color) {
+  switch (src_color) {
+    case RGB565:
+      ret.resize(w * h * 4);
+      ctrff::RGB565toRGBA(
+          ret, reinterpret_cast<const ctrff::u16*>(pixels.data()), w, h);
+      break;
+    case RGB888:
+    case RGBA8888:
+      ret.resize(w * h * 4);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int bpp = src_color == RGBA8888 ? 4 : 3;
+          int src = ctrff::TileIndex(x, y, w) * bpp;
+          int dst = (y * w + x) * 4;  // basic rgba indexing btw
+          for (int i = 0; i < bpp; i++) {
+            ret[dst + i] = pixels[src + bpp - 1 - i];
+          }
+          if (src_color == RGB888) {
+            ret[dst + 3] = 255;
+          }
+        }
+      }
+      break;
+    case A8:
+      ret.resize(w * h * 4);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = ctrff::TileIndex(x, y, w);
+          int dst = (y * w + x) * 4;
+          ret[dst + 0] = 255;
+          ret[dst + 1] = 255;
+          ret[dst + 2] = 255;
+          ret[dst + 3] = pixels[src];
+        }
+      }
+      break;
+    case A4:  // most hated by me (tobid7)
+      ret.resize(w * h * 4);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = ctrff::TileIndex(x, y, w);
+          int dst = (y * w + x) * 4;
+          /**
+           * Basically checking by %2 aka &1 if we have a high or low nibble
+           * by this we either extract the high or low one and multiply
+           * by 17 aka 0x11 to get the resulting A8 Value
+           */
+          ctrff::u8 a4 = src & 1 ? ((pixels[src >> 1] >> 4) & 0xf) * 0x11
+                                 : (pixels[src >> 1] & 0xf) * 0x11;
+          ret[dst + 0] = 255;
+          ret[dst + 1] = 255;
+          ret[dst + 2] = 255;
+          ret[dst + 3] = a4;
+        }
+      }
+      break;
+    case L4:  // most hated by me (tobid7)
+      ret.resize(w * h * 4);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = ctrff::TileIndex(x, y, w);
+          int dst = (y * w + x) * 4;
+          /**
+           * Same as A4
+           * Basically checking by %2 aka &1 if we have a high or low nibble
+           * by this we either extract the high or low one and multiply
+           * by 17 aka 0x11 to get the resulting A8 Value
+           */
+          ctrff::u8 a4 = src & 1 ? ((ret[src >> 1] >> 4) & 0xf) * 0x11
+                                 : (ret[src >> 1] & 0xf) * 0x11;
+          pixels[dst + 0] = a4;
+          pixels[dst + 1] = a4;
+          pixels[dst + 2] = a4;
+          pixels[dst + 3] = 255;
+        }
+      }
+      break;
+    case L8:
+      ret.resize(w * h * 4);
+      for (int x = 0; x < w; x++) {
+        for (int y = 0; y < h; y++) {
+          int src = ctrff::TileIndex(x, y, w);
+          int dst = (y * w + x) * 4;
+          ret[dst + 0] = pixels[src];
+          ret[dst + 1] = pixels[src];
+          ret[dst + 2] = pixels[src];
+          ret[dst + 3] = 255;
+        }
+      }
+      break;
+
+    default:
+      throw std::runtime_error("[ctrff] Pica: Unsupported Color format: " +
+                               std::to_string((int)src_color));
+      break;
+  }
+}
+}  // namespace Pica
+}  // namespace ctrff
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.22)
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../vendor/palladium palladium)
+
+add_subdirectory(ctrff)
--- a/tools/ctrff/CMakeLists.txt
+++ b/tools/ctrff/CMakeLists.txt
@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.22)
+
+project(ctrff-cli)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED true)
+
+add_executable(ctrff-cli source/main.cpp)
+target_include_directories(ctrff-cli PUBLIC include
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../vendor/stb
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../vendor/cli-fancy/include
+)
+target_link_libraries(ctrff-cli PUBLIC ctrff palladium)
+
+add_executable(test source/test.cpp)
+target_include_directories(test PUBLIC include
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../vendor/stb
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../vendor/cli-fancy/include
+)
+target_link_libraries(test PUBLIC ctrff)
+
+install(TARGETS ctrff-cli)
--- a/tools/ctrff/source/main.cpp
+++ b/tools/ctrff/source/main.cpp
@@ -10,7 +10,6 @@
 #include <utility>

 /** Import palladium stb image */
-#define STB_IMAGE_IMPLEMENTATION
 #include <pd/external/stb_image.h>
 #define STB_IMAGE_WRITE_IMPLEMENTATION
 #include <stb_image_write.h>
@@ -432,7 +431,12 @@ void LZ11Compress(const cf7::command::ArgumentList &data) {
      std::make_pair(i, cf7::col(255, 210, 0)),
      std::make_pair(FormatBytes(buf.size()), cf7::col(255, 255, 0)),
  });
-  auto res = ctrff::LZ11::Compress(buf);
+  std::vector<ctrff::u8> res;
+  if (buf[0] == 0x11) {
+    res = ctrff::LZ11::Decompress(buf);
+  } else {
+    res = ctrff::LZ11::Compress(buf);
+  }
  cf7::PrintFancy({
      std::make_pair("Output", cf7::col(255, 165, 0)),
      std::make_pair(o, cf7::col(255, 210, 0)),
@@ -451,61 +455,41 @@ void BCLIMMaker(const cf7::command::ArgumentList &data) {
    std::cout << "[ctrff] BCLIM: Error, no input or output" << std::endl;
    return;
  }
-  if (f.empty() || (f.compare("rgba32") != 0 && f.compare("a8") != 0 &&
-                    f.compare("rgb565") != 0)) {
-    f = "a8";
-  }
-  int w = 0, h = 0, c = 0;
-  auto ret = stbi_load(i.c_str(), &w, &h, &c, 4);
-  if (!ret) {
+  PD::Image::Ref img = PD::Image::New();
+  img->Load(i);
+  if (img->GetBuffer().empty()) {
    std::cout << "[ctrff] BCLIM: Failed to load image " + i << std::endl;
    return;
  }
-  if (!PD::BitUtil::IsSingleBit(w) || !PD::BitUtil::IsSingleBit(h)) {
+  if (!PD::BitUtil::IsSingleBit(img->Width()) ||
+      !PD::BitUtil::IsSingleBit(img->Height())) {
    std::cout << "[ctrff] BCLIM: Image with and height must be a power of 8!";
    return;
  }
-  size_t size = w * h;
-  if (f == "rgba32") {
-    size *= 4;
+  img->Convert(img, img->RGBA);
+  std::vector<ctrff::u8> res;
+  ctrff::Pica::Color fmt = ctrff::Pica::A8;
+  if (f == "a4") {
+    fmt = ctrff::Pica::A4;
+  } else if (f == "l4") {
+    fmt = ctrff::Pica::L4;
+  } else if (f == "a8") {
+    fmt = ctrff::Pica::L8;
+  } else if (f == "l8") {
+    fmt = ctrff::Pica::L8;
  } else if (f == "rgb565") {
-    size *= 2;
-  }
-  std::vector<ctrff::u8> res(size);
-  if (f == "rgba32" || f == "a8") {
-    for (int x = 0; x < w; x++) {
-      for (int y = 0; y < h; y++) {
-        int src = (y * w + x) * 4;
-        int dst = ctrff::TileIndex(x, y, w);
-        if (f == "rgba32") {
-          dst *= 4;
-          res[dst + 3] = ret[src + 0];
-          res[dst + 2] = ret[src + 1];
-          res[dst + 1] = ret[src + 2];
-          res[dst + 0] = ret[src + 3];
-        } else {
-          res[dst] = ret[src + 3];
-        }
-      }
-    }
-  } else if (f == "rgb565") {
-    std::vector<ctrff::u16> res16(w * h);
-    ctrff::RGBA2RGB565(res16.data(),
-                       std::vector<ctrff::u8>(ret, ret + (w * h * 4)), w, h);
-    for (int i = 0; i < res16.size(); i++) {
-      int pos = i * 2;
-      res[pos] = (ctrff::u8)(res16[i] & 0xff);
-      res[pos + 1] = (ctrff::u8)((res16[i] >> 8) & 0xff);
-    }
+    fmt = ctrff::Pica::RGB565;
+  } else if (f == "rgb888") {
+    fmt = ctrff::Pica::RGB888;
+  } else if (f == "rgba8888") {
+    fmt = ctrff::Pica::RGBA8888;
  }
+  ctrff::Pica::EncodeImage(res, img->GetBuffer(), img->Width(), img->Height(),
+                           fmt);
+
  ctrff::BCLIM file;
-  ctrff::BCLIM::Format fmt = ctrff::BCLIM::A8;
-  if (f == "rgba32") {
-    fmt = ctrff::BCLIM::RGBA8888;
-  } else if (f == "rgb565") {
-    fmt = ctrff::BCLIM::RGB565;
-  }
-  file.CreateByImage(res, w, h, fmt);
+  ctrff::BCLIM::Format _fmt = (ctrff::BCLIM::Format)fmt;
+  file.CreateByImage(res, img->Width(), img->Height(), _fmt);
  file.Save(o);
  std::cout << "File " + o + " created" << std::endl;
 }
@@ -556,7 +540,7 @@ int main(int argc, char *argv[]) {
                                                    "Output icon path!", false))
                     .SetFunction(Read3DSX));
  mgr.AddCommand(
-      cf7::command("lz11", "Creates a LZ11 Compressed File")
+      cf7::command("lz11", "Compress/Decompress a file with LZ11")
          .AddSubEntry(cf7::command::sub("i", "input", "Input file path", true))
          .AddSubEntry(
              cf7::command::sub("o", "output", "Output file path", true))
@@ -570,8 +554,9 @@ int main(int argc, char *argv[]) {
          .AddSubEntry(cf7::command::sub("i", "input", "Input png|bmp", true))
          .AddSubEntry(cf7::command::sub("o", "output",
                                         "Output path of .bclim file", true))
-          .AddSubEntry(cf7::command::sub("f", "format",
-                                         "Image format rgba32|rgb565|a8", true))
+          .AddSubEntry(cf7::command::sub(
+              "f", "format", "Image format rgba8888|rgb888|rgb565|a8|l8|a4|l4",
+              false))
          .SetFunction(BCLIMMaker));
  mgr.Execute();
  return 0;
--- a/tools/ctrff/source/test.cpp
+++ b/tools/ctrff/source/test.cpp
--- a/vendor/palladium
+++ b/vendor/palladium